December weather forecastWhaleyville, MD
December
Weather in December
The first month of the winter, December, is also a frosty month in Whaleyville, Maryland, with an average temperature fluctuating between 48.4°F (9.1°C) and 39.2°F (4°C).Temperature
The beginning of December brings a minor change in the average high-temperature, shifting from a refreshing 55.6°F (13.1°C) in November to a chilly 48.4°F (9.1°C). Whaleyville records an average nighttime low of 39.2°F (4°C) in December.Humidity
In Whaleyville, the average relative humidity in December is 76%.Rainfall
In December, the rain falls for 10.4 days. Throughout December, 1.26" (32mm) of precipitation is accumulated. Throughout the year, there are 139.3 rainfall days, and 16.85" (428mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In December, in Whaleyville, it is snowing for 2 days. Throughout December, 0.24" (6mm) of snow is accumulated. Throughout the year, there are 8.6 snowfall days, and 1.34" (34mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:00 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:50 pm EST.
Sunshine
In Whaleyville, the average sunshine in December is 5.4h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Whaleyville. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The average daily UV index of 2 in December transforms into the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Stay sun-safe with clothing that is both closely woven and worn loosely. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Whaleyville, MD
- Average high temperature in December: 48.4°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (42.4°F).
- Average low temperature in December: 39.2°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).
Average pressure in December
Whaleyville, MD
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Whaleyville, MD
- Average wind speed in December: 11.4mph
The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).
Average humidity in December
Whaleyville, MD
- Average humidity in December: 76%
The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in December
Whaleyville, MD
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is July (2.05").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in December
Whaleyville, MD
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in December
Whaleyville, MD
- Average snowfall in December: 0.24"
The month with the highest snowfall is January (0.43").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Whaleyville, MD
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is January (2.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Whaleyville, MD
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in December
Whaleyville, MD
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is January (18.9 days).
The month with the least sunshine days is July (12.4 days).
Average UV index in December
Whaleyville, MD
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Whaleyville, MD
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in December
Whaleyville, MD
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
